145205066644 has 24 divisors (see below), whose sum is σ = 277229318688. Its totient is φ = 65997625440.

The previous prime is 145205066621. The next prime is 145205066681. The reversal of 145205066644 is 446660502541.

It is a super-2 number, since 2×145205066644² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145205066644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554254 + ... + 773050.

It is an arithmetic number, because the mean of its divisors is an integer number (11551221612).

Almost surely, 2^145205066644 is an apocalyptic number.

It is an amenable number.

145205066644 is a deficient number, since it is larger than the sum of its proper divisors (132024252044).

145205066644 is a wasteful number, since it uses less digits than its factorization.

145205066644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233895 (or 233893 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 145205066644 in words is "one hundred forty-five billion, two hundred five million, sixty-six thousand, six hundred forty-four".